Jessica Biel joined activist Robert F. Kennedy Jr. to lobby against California state bill SB 276 on Tuesday (June 11) during a visit to the California State Capitol in Sacramento, Calif.

RFK Jr. is known for being anti-vaccines and he praised Jessica in an Instagram post that highlighted their visit with lawmakers.

“Please say thank you to the courageous @jessicabiel for a busy and productive day at the California State House,” Robert captioned the below Instagram post.

While there have been unconfirmed reports that Jessica and husband Justin Timberlake do not plan on vaccinating their kids, she has never spoken publicly on the topic. In an interview with The Daily Beast, Kennedy would not align her with the anti-vaxx movement.

“I would say that she was for safe vaccines and for medical freedom,” he said. “My body, my choice.”

“The biggest problem with the bill, which is something I think Jessica is concerned with, is that a doctor who has made a determination—if he has found children in this state whose doctors have determined that they’re too fragile to receive vaccinations—this bill would overrule the doctors and force them to be vaccinated anyways,” he added. “She was a very effective advocate. he was very strong and very knowledgeable. Extremely well-informed. An extremely effective advocate. She knows what she’s talking about…She’s upset about this issue because of its particular cruelty. She has friends who have been vaccine-injured who would be forced to leave the state.”

Kennedy said that he and Jessica met with about 15 legislators during their visit, but would not confirm who they were.